Excavating-machine.



J. HOOD. EXGAVATING MACHINE. APPLICATION mum APR. 22, 1911.

Zlwuemkom J. HOOD.

EXGAVATING MACHINE.

APPLICATION mum APR. 22. 1911.

Patented Mar. 19, 1912.

Mum's-sum 2.

UNlTlEU STATES Pi TEN T OFFICE.

JOHN HOOD, OF DETROIT, MICHIGAN, ASSIGNOR OI? ONE-HALF TO JAMES PITTON, OF

DI'I'IROYI. MICHIGAN. I

EXCAVATINGJWACHINE.

Specification 9 Letters Patent jla'tenl'ed Mar. 1!), 1.9.12.

Application filed April 22, 1911. Serial No. 622,662.

Be it known that .l, dour: lloon, a citizen i of the United at Detroit, in the county of Wayne and State o'i' ililichigau, have in\ 'enl.ed.certain new and useful lniprm'emenls in llxcavatblades of America, residing 5 ing-Maehines, ol which the "Following is a. i specification, rel'erenee being; bad therein to being had to the aeconrpanyinp drawiiugs Figure l is a. side eleval ion of a device embodying the invention; Fig. 2, a plan view-oi? the same; .lliig. 3, an enlarged see-- tional detail of the boom; and Fig. f, a cross seelion oi' the same on the line m of Fig.

As shown in the drawii'igs 1 is the rear end of the platform of a suitable truck or wagoirluwing rear supporting" wheels and mounl'ed upon the platform 1 any suitable motor for supplying power to lurn a series of Winding drums or spools 3, 1. 5 and 6 of any suitable constrimtum and a r-- rangen'ienl. A must 7 is ereeted upon the platform adjacent to the winding drums and held in vertical position by suitable my lines 8.

Al; lho extreme rear end of the platlorm is pivotally supported a turn-table or disk 9 having an axial pivot 10 upon which it turns and a suitable supporting brace .11.

.1ivotally attached al 12 to the disk is one end of a tubular boom 13 m \VlllCll 1s arranged to slide freely, an extension boom i l of considerabl less diameter than the internal diameter of the-tubular boom. A head 15 on the extension boom forms a guide :l'or the inner end thereof sliding freely within the tubular boom and in the outer end of the tubular boom is a bushing l6 forming a bearing through which the exlension boom slides freely. The extension boom is prevented from turning witl iin the bush ing by means of a gib or key 17 carried by lhe bushing and engaging a slot or l e \'\\a v m the exlensiou boom. The bushing 16 is zuljuslably held within the end of [he inbular boom by means of sol; screws lb engaging a. series or nolches '15) in the taco ol. lhe bushing so that by loosening the set serews the bushing: together with lhe extension may be turned and held in an adjusted position by a. i'ei ngagement oil the set serews with olher notches in" the series.

The extension boom l l. is projected ilirom lhe tubular boom by means 01 a line 20 attached at one end to the head 15 of the extension boom and passing outward within the tubular boom llO near the outer end lhereo'l'. is exlendrd through an opening in the tubular boom and over a sheave 21 carried lherelrv. The opposite end of the line is passed around the winding drum 3 lo be wound thereon in projecting lhe boom. The boom is swam laterally, turning upon the axis pin it) ol the disl; l), by means of side lines 153 :llliH'llUll at one end to laterally extruding cross arms 2.; secured to the exlreme outer end ol' 'lhe tubular boom, said lines extending loward the winding n'ieclnn iiisln beneath the blocks Z-Llattached to the platform '1 and wrapped around the drums or spools o in be wound thereon, one of the lines being wound around one spool in one direction and the other line being wound in an opposi're direelioi'i around the other spool so that when the spools are turned one line will be wound up and the other line simullaneously paid out.

Secured lo the extreme outer end of the extension boom l l is a goosemeek 25 comprising lwo llal parallel bars 26 spaced apart lo-l'orm a guide slot between them. A shorel or seraper 27 of any suitable form is pirolalli' allarhed lo llH l'ree end ol' the goose-neck by means of a pivot pin or bolt to passing through openings in the ends ol' the bars Bo and through an opening in a plate 31 secured lo the rear end of the shovel. series oi holes Ill) is provided in lhe plate 29 to receive the pin 28, said holes being arranged in a semi-rirenlar row and thus the heel of the shovel may be raised or lowered in relation to the goose-neelpby adjusiiu g the pin 28 in this series ol holes.

To hold the shovel in raised position relative to the goose-nook so that? the dirt thereon will not fall oil' when the boom is raised, and to permit the shovel to drop,

turning upon its pin 28 to discharge the dirt, a bail 31 is pivotally attached to the sides ot the shovel near its forward end and attached to this bail by means of a shackle 32 is a line which passes upward and over a sheave 3t journaler l between the bars 26 of the goose-neck near the inner end thereof, and then outwardly around a second sheave 535 similarly supported between the bars. l routl the sheave 371 the line extends forwardly to the winding drum 5 in engagement with a suitable double block 36.

The shovel is yieldingly held turned upon its pivot in the direction opposite to that,

shovel engage the earth at some other angle in which it is turned by the bail 31, by means i of a coiled spring at sleeved upon a rod 38 between a head 39 on the rod and a yoke atO thereon. The rod is pivotally attached at one end to the upper end of the plate 29 on the shovela'nd extends upwardly between the bars 26 ot' the goose-neck which bars form a guide for the rod. The yoke 40 embraces the goose-neck and is adjustably, attached thereto by means of apin or bolt 41 passing through the yoke and adapted to engage a series at holes 1-2 in the gooseneck. The spring 37 is thus held in compression betweenthe yoke 40 and the head 39 on the rod and exerts a force tending to swing the shovel upon its pivot 28 downward. The shovel is thus yieldingly held turned against the lift ot the bail 31, and by adjusting the yoke 40 along the goose-neck by means of the holes 42 the tension of the spring 37 may be adjusted.

The boom with its attached goose-neck and shove is raised by means of a line 43 attached by means of a shackle 44 to the goo encck and extended beneath the block 36 upward and over a sheave 45 carried upon the extreme upper end of the mast 7. From the sheave 45 the line extends downward and around ;the winding drum -l-.

In the operation of the machine, the line 33 is first. slacltened permitting the spring 37 to turn the shovel'downward into a vertical position. The extension boom is then projected the desired distance by winding up the line 20 and at. the same time letting out an equal amount upon the line 43, the boom being supported during such outward movement by said line. lVhen the boom has been projected the desired distance, the line 43 is quicldy slacltened permitting the boom to tall and drive the shovel into the ground, aid shovel being in a vertical position. The line It?) is then wound upon its drum turning the. shovel 27 into position to'carry its load and retracting the extension boom. When the boom has been l'ully retracted it is then raised by means of the line 43 and swung laterally in either direction by means of the lines 22 to the position where it is desired to dump the load. When in dumping position the line :33 is slackened, permitting 1 goose-neck at one side of the longitudinal than in a horizontal position as in forming a rounding bottom of a ditch or cutting or undercutting a wall of earth.

Having thus fully described my inven tion what I claim is: i

1. in an excavating machine, the combination of an extension boom adapted to turn upon its longitudinal axis, a downwardly curved goose-neck on the outer end of said boom. a shovel attached to the. end of said axis of the boom and adapted to be swung laterally by turning theboom, means for holding the boom in the position to which it is turned, and means for actuating the boom to operate the shovel.

2. In an excavating machine, the combination with a truck, power winding mech anism carried by said truck, a vertical mast on the truck, a member pivotally carried by the truck to turn upon a vertical axis, an extensible. boom pivotally attached to said member, a goose-neck on the outerend of the boom, a shovel pivotally attached at its rear end to the goose-neck with its forward end toward the truck, a line for turning'the shovei leading to the winding mechanism, a spring for turning the shovel against the action of said line, and lines attached to the boom and leading to the winding mechanism for projecting and retracting the boom.

3. In an excavating machine, the combination of a truck, a boom pivotally attached atone end to the truck, a shovel pivotally attached at its run end to the boom, a line attached to .the forward end of the shovel to swing the same upwardly on its pivot, and a spring carried by the boom and act-- ing upon the shovel to turn the Same upon its pivot in a direction opposite to that in which it: is turned by the line.

--l. in an excavating machine, the combination of a boom, a. goose-neclt secured to the outer end ot' the boom, a shovel pivotall v attached at its rear end to the end of the goose-neck, a bail pivotally attached to the 'lorward end ol the shovel. a line attached tothe bail to turn the shovel upon its pivot in one direction. a rod pivotally attached to the shovel near its rear end and adjustably connected to the goosc-nccl at its opposite end. and a spring sleeved on the rod exerting a force to turn the shovel upon its pivot.

5. In an excavating machine, the combination of a boom, a goose-neck on the outer end of the boom, a shovel pivotally attached at its rear end to the end of the goose-neck, a line attached to the forward end of the shovel to turn the same upon its pivot, a. rod pivotally attached to the rear end of the shovel and provided with a head, a yoke through which the rod is adapted to slide, said yoke being adjustably attached to the goose-neck, and a coiled spring sleeved upon the rod between the yoke and the head on the rod.

6. In an excavating machine, the combination of a tubular boom, an extension boom slidable within the tubular boom, means for ad justably holding the extension boom from turning within the tubular boom adapted to be adjusted to turn the extension boom relatively to the tubular boom, a goose-neck on the outer end of the extension boom, a shovel pivot ally attached to the goose-neck, and means for operating the shovel.

7. In an excavating machine, the combination of a truck having a platform, a tubular boom pivotally attached to the platform at one end, an extension boom with in the tubular boom adapted to be turned within the tubular boom, means for guiding the extension boom and holding the same in the position to which it is turned within the tubular boom, a shovel pivotally attached to the outer end of the extension boom at one side of the longitudinal axis of said boom, and means for swinging the shovel on its pivot.

S. In an excavating machine the combination of a boom, a goose-neck secured to the outer end of the boom formed of par allel bars spaced apart, a shovel adjustably and pivotally attached at its rear end between the ends of said bars forming the goose-neck, a bail pivotally attached to the shovel near its forward end, a sheave journaled between the bars of the goose-neck, a line attached to the bail and engaging the sheave, a rod pivotally attached to the rear end of the shovel and having a head, said rod extending upward between the parallel bars, a yoke through which the rod is adapted to slide, said yoke embracing the r goose-neck and ad ustably attached thereto, a spring sleeved on the rod between the head and the yoke, and a line attached to the goose-neck for raising the boom.

in testimony whereof afiix my signature in presence of two witnesses.

JOHN HOOD. \Vitnesses:

LEWIS E. FmNnnns, ANNA O. RAvrLnR. 

